Explain why a relative price is an opportunity cost. The money price of a pack of frozen burritos is $0.60 and the money price of a half gallon of milk is $2.40 The opportunity cost of a half gallon of milk is O A. 0.25 half gallons of milk O B. $2.40, the price of a half gallon of milk O C. $0.60, the money price of a pack of frozen burritos O D. 4:00 packs of frozen burritos, which is the relative price of a half gallon of milk